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    • 43. 发明授权
    • Method about protecting high layer service in the multilayer communication equipment
    • 在多层通信设备中保护高层服务的方法
    • US07881186B2
    • 2011-02-01
    • US10522057
    • 2003-07-17
    • Huan nan MaQing LiMin ZhuPei hua ZhangNan xi Su
    • Huan nan MaQing LiMin ZhuPei hua ZhangNan xi Su
    • H04L1/00
    • H04L12/437
    • This invention relates to a method for protecting high layer service in the multi-layer communication equipment, include that low layer processing module which provides low layer transmission passages for high layer processing module, and high layer processing module which sets up transparent VP link passage from up and down node by the service of said module, in order to make the service processed by the said module avoid influence. Once detecting the fault of the said processing module, high layer processing module will message the low layer processing module, and the low layer processing module will set up bypass connection after detecting the fault of the high layer processing module, then isolate the failed high layer process module. According to the present invention, extra network passages are not necessary, the means of protecting network is not limited. The present invention aims to protect effectively ATM traffic when the processing ability of ATM layer invalidate between MSPP and MSTP. The present invention solves the problem that will influence the other node of the network beyond the said node service in the case of device maintenance.
    • 本发明涉及一种用于保护多层通信设备中的高层业务的方法,包括为高层处理模块提供低层传输通道的低层处理模块,以及建立透明VP链路通道的高层处理模块 通过所述模块的服务来上下节点,以使由所述模块处理的服务避免影响。 一旦检测到所述处理模块的故障,高层处理模块就会通知低层处理模块,低层处理模块将在检测到高层处理模块的故障后建立旁路连接,然后隔离故障高层 过程模块。 根据本发明,不需要额外的网络通道,保护网络的方式不受限制。 本发明旨在在ATM层的处理能力在MSPP与MSTP之间无效时有效保护ATM流量。 在设备维护的情况下,本发明解决了影响网络的其他节点超出所述节点业务的问题。
    • 45. 发明申请
    • Slice-Based Prioritized Secure Video Streaming
    • 基于片的优先安全视频流
    • US20100002875A1
    • 2010-01-07
    • US12140085
    • 2008-06-16
    • Qing Li
    • Qing Li
    • H04L9/18H04L9/28H04L9/08
    • H04L9/088H04N7/1675H04N19/174H04N19/88H04N21/2347H04N21/26613H04N21/4405
    • Slice-based prioritized secure video streaming comprises a transmitter receiving a slice comprising a plurality of macroblocks and selecting an encryption key based at least in part on a relative importance of secure transmission of the macroblocks. If the importance is high, a master key is selected. If the importance is medium, a first key derivable by applying a one-way function to the master key is selected. If the importance is low, a second key derivable by applying the one-way function to the first key is selected. The slice is encrypted using the encryption key. A receiver receives the encrypted slice, decrypts a header of the slice using the master key, to obtain an indication of a relative importance of secure transmission of the macroblocks. The receiver selects a decryption key based at least in part on the indication, and decrypts the slice using the decryption key.
    • 基于片段的优先安全视频流包括发射机,其接收包括多个宏块的切片,并且至少部分地基于宏块的安全传输的相对重要性来选择加密密钥。 如果重要性很高,则选择主密钥。 如果重要性是中等的,则选择通过对主密钥应用单向函数而导出的第一密钥。 如果重要性低,则选择通过将单向函数应用于第一密钥而导出的第二密钥。 使用加密密钥对切片进行加密。 接收器接收加密的片,使用主密钥解密片的头,以获得宏块的安全传输的相对重要性的指示。 所述接收机至少部分地基于所述指示来选择解密密钥,并且使用所述解密密钥来解密所述切片。
    • 49. 发明申请
    • Digital Polar Transmitter
    • 数字极性变送器
    • US20080225984A1
    • 2008-09-18
    • US12048022
    • 2008-03-13
    • Walid Khairy Mohamed AhmedQing LiAjit Kumar ReddyEoin Carey
    • Walid Khairy Mohamed AhmedQing LiAjit Kumar ReddyEoin Carey
    • H03C3/00H04L27/12H03K7/06
    • H03K7/10H03C5/00H04L25/06H04L27/34H04L27/361H04L27/3863H04L27/389
    • A digital polar transmitter includes a baseband processor configured to receive an input signal and to convert the input signal into a baseband amplitude component and a baseband phase component. The transmitter also includes a phase modulator in communication with the baseband processor. The phase modulator is configured to modulate an RF carrier signal based on the phase component and to generate a phase-modulated RF carrier signal. A power amplifier is provided in communication with the baseband processor and the phase modulator. The power amplifier is configured to amplify the phase-modulated RF carrier signal based on the baseband amplitude component and to generate an amplified RF signal. The transmitter also includes a digital feedback loop in communication with the power amplifier and the baseband processor. The digital feedback loop is configured to detect the amplified RF signal and to provide a digital amplitude feedback signal and a detected phase feedback signal to the baseband processor.
    • 数字极化发射机包括:基带处理器,被配置为接收输入信号并将输入信号转换成基带振幅分量和基带相位分量。 发射机还包括与基带处理器通信的相位调制器。 相位调制器被配置为基于相位分量来调制RF载波信号并且产生相位调制的RF载波信号。 提供与基带处理器和相位调制器通信的功率放大器。 功率放大器被配置为基于基带幅度分量来放大相位调制的RF载波信号并产生放大的RF信号。 发射机还包括与功率放大器和基带处理器通信的数字反馈回路。 数字反馈回路被配置为检测放大的RF信号,并向基带处理器提供数字幅度反馈信号和检测的相位反馈信号。